Refraction close refractionProcess by which a wave changes speed and sometimes direction upon entering a denser or less dense medium, eg a light ray changes direction when refracted by a lens. of ...

The gamma-ray emissions from the poles were particularly concentrated in June 2014, when the magnetic poles of the sun reversed, a phenomenon that happens every 11.5 years or so at the peak of ...

Sharjah residents: Did you look up today? On Saturday afternoon, a wonderful phenomenon took over Sharjah's skies — the 22º halo. This optical phenomenon was a result of the refraction of ...

U.N. delegates on Thursday withdrew a motion calling for more research into technologies that aim to fight climate change by reflecting the sun's rays back into space, amid concerns about health ...